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Browning has introduced the BAR Mk 4, the fourth generation of its long‑running semi‑automatic hunting rifle, updating the platform with improved accuracy, modernized ergonomics, and a broader range of configurations, including factory left‑hand models alongside traditional right‑hand options.
Also, there’s a USA 250th Anniversary edition.
The BAR Mk 4 builds on John M. Browning’s original gas‑operated autoloading concept that’s more than 100 years old, retaining the system’s reputation for reliability while refining the rifle’s mechanical interface and handling characteristics for modern hunters.
Improved Accuracy and Action Design
Significantly, one of the changes in the Mk 4 is the new barrel‑to‑receiver interface. Browning now threads the button‑rifled barrel directly into the receiver, a method commonly used on bolt‑action rifles.
This creates a more precise relationship between the barrel and the seven‑lug rotating bolt, which locks directly into the barrel extension, improving consistency and potential accuracy.
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The rifle continues to use Browning’s short‑stroke gas piston system, which keeps combustion gases out of the receiver to reduce fouling and enhance reliability. An integrated buffer system helps reduce wear on the operating components and softens recoil.
Ergonomics and Stock Adjustability
Externally, the BAR Mk 4 features updated, more angular lines and a more vertical pistol grip, bringing the rifle’s handling closer to modern sporting rifles without losing its traditional hunting profile.
Stocks are shim‑adjustable, allowing shooters to fine‑tune cast and drop for proper scope alignment and comfort.
Composite models may include raised cheekpads, while walnut‑stocked variants maintain classic styling with modern internal geometry and beautiful wood. They all come tapped for scope mounts.
Available in these calibers, which Browning says remain the most popular sellers:
- Left- and right-handed:
- 243 Win • 22″
- 308 Win • 22″
- 270 Win • 22″
- 30-06 SPRG • 22″
- 7MM REM MAG • 24″
- 300 WIN MAG • 24″
- Right-handed only:
- 25-06 REM
- 270 WSM
- 30-06 SPRG
- 300 WSM
- 7MM-08 REM
Left‑Hand and Right‑Hand Options
For 2026, Browning is offering the BAR Mk 4 in both right‑hand and left‑hand configurations, with multiple left‑hand models shown at SHOT Show. These are true left‑hand rifles, not ambidextrous conversions, featuring left‑side ejection and controls tailored for southpaw shooters.
Configurations and Availability
The BAR Mk 4 lineup spans a wide range of finishes and chamberings, from classic walnut and blued steel to composite stocks, Cerakote finishes, and camo options.
Chamberings range from popular short‑action cartridges to magnum offerings such as .300 Winchester Magnum, reinforcing the BAR’s role as a serious big‑game rifle. MSRP starts at $1,079.
Check out all the furniture and stock options here.
Browning BAR Mk 4 — Key Specifications (General)
- Manufacturer: Browning
- Model: BAR Mk 4
- Action: Semi‑automatic, gas‑operated
- Operating System: Short‑stroke gas piston with integrated buffer
- Bolt: Seven‑lug rotating bolt locking into the barrel
- Feeding: Detachable box magazine (varies by caliber)
- Barrel: Button‑rifled, threaded into receiver
- Stock: Shim‑adjustable (walnut or composite, model dependent)
- Handedness: Right or left ejection
- Calibers: From .243 Win to .300 Win Mag (model dependent)
- Intended Use: Big‑game hunting, rapid follow‑up shots
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Levi is an avid hunter, and an increasingly avid shooter. He strives to make delicious and simple recipes from the game he kills. He makes a living as a professional photographer and writer. Check out his work.